Airman 1st Class Kam Watt, 4th Airlft Squadron loadmaster, marshalls a K-loader up to the back of a C-17 Globemaster III to offload cargo in Iraq, Dec. 20, 2019. A C-17 loadmaster is responsible for the on-load and off-load of cargo from the aircraft, and for securing it while in transit. (U.S. Air Force photo by Airman 1st Class Mikayla Heineck)